then &longs;uch Ethereal matter as was &longs;ubtle <lb/>
enough freely to penetrate the pores of <lb/>
the Gla&longs;s, the external Air would have <lb/>
been able to impel the Water to the top <lb/>
of a Tube &longs;even or eight times as long as <lb/>
ours was; The <emph type="italics"/>Phænomenon<emph.end type="italics"/> under con&longs;i<lb/>
deration &longs;eem'd manife&longs;tly to argue that <lb/>
the many bubbles that broke at the top <lb/>
of the Water did contain a real Air, <lb/>
which, being collected into one place and <lb/>
hinder'd by the top of the Gla&longs;s from re<lb/>
ceding, was able to with&longs;tand the pre&longs;&longs;ure <lb/>
of the outward Air. </s> <s>As we &longs;ee that if <lb/>
never &longs;o little Air remain in the Tube up<lb/>
on the making the Experiment <emph type="italics"/>De Vacuo<emph.end type="italics"/><lb/>
with Quick-&longs;ilver, no inclining of the <lb/>
Tube, though a long one, will enable a <lb/>
Man to impel the Mercury up to the very <lb/>
top, by rea&longs;on (as we formerly noted) <lb/>
of the re&longs;i&longs;tance of the included Air, which <lb/>
will not be compre&longs;&longs;'d beyond a certain <lb/>
degree. </s></p>

<p type="main"> <s>But in order to a further Di&longs;covery what <lb/>
our bubbles were, we will, on this occa<lb/>
&longs;ion, inform Your Lord&longs;hip that we try'd <lb/>
the XIX<emph type="sup"/>th<emph.end type="sup"/> <emph type="italics"/>Experiment<emph.end type="italics"/> in one of our &longs;mall <lb/>
Receivers, and &longs;ound, that upon the draw<lb/>
ing down of the Water, &longs;o many bubbles <lb/>
di&longs;clo&longs;'d them&longs;elves and broke into the